MC68HC908JK3EMP MOTOROLA [Motorola, Inc], MC68HC908JK3EMP Datasheet - Page 201

• Manufacturer Part Number: MC68HC908JK3EMP
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

18.7 5V Control Timing
MC68H(R)C908JL3E/JK3E/JK1E
MOTOROLA
NOTES:
Internal operating frequency
RST input pulse width low
1. V
2. Some modules may require a minimum frequency greater than dc for proper operation; see appropriate table for this
3. Minimum pulse width reset is guaranteed to be recognized. It is possible for a smaller pulse width to cause a reset.
NOTES:
Pullup resistors
LVI reset voltage
1. V
2. Typical values reflect average measurements at midpoint of voltage range, 25 °C only.
3. Run (operating) I
4. Wait I
5. Stop I
6. Maximum is highest voltage that POR is guaranteed.
7. If minimum V
8. R
noted.
information.
DD
loads. Less than 100 pF on all outputs. C
affects run I
than 100 pF on all outputs. C
wait I
minimum V
PTD6, PTD7
RST, IRQ1, PTA0–PTA6
DD
PU1
= 4.5 to 5.5 Vdc, V
= 4.5 to 5.5 Vdc, V
DD
and R
DD
DD
.
measured using external square wave clock source (f
measured with OSC1 grounded; no port pins sourcing current. LVI is disabled.
DD
PU2
DD
DD
(8)
. Measured with all modules enabled.
is reached.
Characteristic
are measured at V
DD
is not reached before the internal POR reset is released, RST must be driven low externally until
measured using external square wave clock source (f
Characteristic
SS
SS
(3)
= 0 Vdc, T
Table 18-4. DC Electrical Characteristics (5V)
= 0 Vdc, T
(2)
L
—
(1)
= 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects
DD
Rev. 2.0
Table 18-5. Control Timing (5V)
A
A
= 5.0V.
= T
(1)
= T
L
L
L
to T
= 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly
to T
Electrical Specifications
H
; timing shown with respect to 20% V
H
, unless otherwise noted.
Symbol
V
R
R
LVR5
PU1
PU2
OP
= 4MHz). All inputs 0.2V from rail. No dc loads. Less
Symbol
t
f
IRL
OP
OP
Min
1.8
3.6
16
= 4MHz). All inputs 0.2V from rail. No dc
Min
750
DD
—
Typ
and 70% V
3.3
4.0
26
(2)
Electrical Specifications
Max
SS
—
8
Max
5V Control Timing
, unless otherwise
4.8
4.4
36
Technical Data
MHz
Unit
Unit
ns
k Ω
k Ω
V
201